An electronic apparatus includes a housing and a retaining member. Agents on the hosts utilize monitoring software inserted between the applications and the network protocol stacks. Consequently, it is possible to provide a liquid crystal display device to which a long flexible printed circuit board is mounted in a compact state. Typically, the interposer will also have a fiber array mount arranged to receive a fiber bundle and to position the fiber bundle appropriately over the array of mirrors. By using feed-forward technique, one of the two ramp signals has a peak varying with the input voltage and the other ramp signal has a valley varying with the input voltage, so that the power converter has fast line response.